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›› 2009, Vol. 43 ›› Issue (6): 31-35.

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Research on Degradation of Alkali Lignin by Nano Titanium Dioxide Photocatalysis

CHEN Yun-ping1,2, FU Yan-bin3, YANG Ping1, CHEN Li1, CHENG Xian-su2   

  1. 1. Department of Chemistry and Chemical Engineering Minjiang University, Fuzhou 350108, China;2. College of Material Science and Engineering Fuzhou University, Fuzhou 350002, China;3. Fujian Environmental Monitoring Central Station, Fuzhou 350003, China
  • Received:2009-07-08 Revised:1900-01-01 Online:2009-11-30 Published:2009-11-30

Abstract: The degradation rate of alkali lignin was over 70% at the condition of lignin 5 g, the dosage of catalyst 0.75 g/L, illumination time 2.5 h and pH value 10 by nano titanium dioxide photocatalysis. The GC-MS analysis results showed the structure of lignin was complex. In the process of degradation of alkali lignin, the aromatic structure and the side chain were preferential oxidized or broken. The degradation products were vanilla, guaiacyl derivative and other small molecula substances.

Key words: alkali lignin, degradation, nano titanium dioxide photocatalyst

CLC Number: